Hudson Technologies (HDSN) insider corrects reported share ownership

Rhea-AI Filing Summary

Hudson Technologies Inc. insider activity was updated through an amended ownership report. The filing reflects a December 5, 2025 sale of 484,616 shares of common stock at $7.404 per share. After this transaction, the reporting person now states they directly beneficially own 426,968 shares.

The amendment explains that the post-transaction ownership had previously been reported as 1,944,312 shares and is being corrected to 426,968 shares. No new transactions are disclosed; the change is limited to fixing the reported share balance following the December 5 trade.

Insider Trade Summary

Net Seller: 484,616 shares ($3,588,097)

Net Sell 1 txn

Insider COLEMAN BRIAN F

Role Insider

Sold 484,616 shs ($3.59M)

Type	Security	Shares	Price	Value
Sale	Common Stock	484,616	$7.404	$3.59M

Holdings After Transaction: Common Stock — 426,968 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

COLEMAN BRIAN F

(Last) (First) (Middle)

(Street)

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
HUDSON TECHNOLOGIES INC /NY [ HDSN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Former Director

3. Date of Earliest Transaction (Month/Day/Year)
12/05/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)
12/09/2025

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/05/2025		S		484,616	D	$7.404	426,968(1)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Beneficial ownership following reported transaction should have been reported as 426,968, not 1,944,312.

Remarks:

This Form 4A is only to correct the reported amount to direct ownership of Common Stock of the Issuer following the reported transaction on December 5, 2025, which should have been 426,968, not 1,944,312.

	/s/ Brian F. Coleman	12/15/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does Hudson Technologies (HDSN) recent Form 4/A report?

The amended report shows that a reporting person sold 484,616 shares of Hudson Technologies common stock on December 5, 2025 at $7.404 per share and now reports owning 426,968 shares directly after the trade.

Why was this Hudson Technologies (HDSN) insider filing amended?

The amendment states that beneficial ownership after the December 5, 2025 transaction had been incorrectly reported as 1,944,312 shares and is being corrected to 426,968 shares.

Does the Hudson Technologies (HDSN) Form 4/A show any new insider transactions?

No. The filing explains that it is only to correct the post-transaction ownership amount following the previously reported December 5, 2025 sale, not to report a new trade.

How many Hudson Technologies (HDSN) shares does the reporting person own after the corrected filing?

Following the December 5, 2025 transaction, the reporting person reports 426,968 shares of Hudson Technologies common stock held directly.

What was the price of the Hudson Technologies (HDSN) shares sold in the reported transaction?

The reported sale involved 484,616 shares of Hudson Technologies common stock at a price of $7.404 per share on December 5, 2025.

Who signed the amended insider report for Hudson Technologies (HDSN)?

The amended ownership report was signed by Brian F. Coleman on December 15, 2025.